On Sun, Jan 18, 2009 at 2:43 PM, Richard Elling <richard.ell...@sun.com>wrote:
> comment at the bottom...
> DIY. Personally, I'd be more upset if ZFS reserved any sectors
> for "some potential swap I might want to do later, but may never
> need to do." If you want to reserve some space for swappage, DIY.
>
> As others have noted, this is not a problem for systems vendors
> because we try, and usually succeed, at ensuring that our multiple
> sources of disk drives are compatible such that we can swap one
> for another.
> -- richard
>
And again I call BS. I've pulled drives out of a USP-V, Clariion, DMX, and
FAS3040. Every single one had drives of slightly differing sizes. Every
single one is right-sized at format time.
Hell, here's a filer I have sitting in a lab right now:
RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used
(MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- -----
-------------- --------------
dparity 0b.32 0b 2 0 FC:B - FCAL 10000
68000/139264000 68444/140174232
parity 0b.33 0b 2 1 FC:B - FCAL 10000
68000/139264000 68444/140174232
data 0b.34 0b 2 2 FC:B - FCAL 10000
68000/139264000 68552/140395088
Notice line's 2 and 3 are different physical block size, and those are BOTH
seagate cheetah's, just different generation. So, it gets short stroked to
68000 from 68552 or 68444.
And NO, the re-branded USP-V's Sun sell's don't do anything any differently,
so stop lying, it's getting old.
If you're so concerned with the storage *lying* or *hiding* space, I assume
you're leading the charge at Sun to properly advertise drive sizes, right?
Because the 1TB drive I can buy from Sun today is in no way, shape, or form
able to store 1TB of data. You use the same *fuzzy math* the rest of the
industry does.
--Tim
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